Low pressure measurement devices in high pressure environments
First Claim
1. A method comprising:
- providing, by a fluid injection system, a fluid valve comprising a first inlet port, a second inlet port, an outlet port, and a valve body comprising an elastomeric component, wherein the outlet port is substantially aligned with the first inlet port, wherein the valve body defines a first fluid path from the first inlet port to the outlet port, and wherein the valve body further defines a second fluid path from the second inlet port to the outlet port;
allowing, by the elastomeric component, the second fluid path to be open when there is substantially no fluid flow through the valve body; and
closing the second fluid path, by the elastomeric component, when a fluid pressure at the first inlet port exceeds a defined pressure.
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Abstract
The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.
109 Citations
23 Claims
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1. A method comprising:
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providing, by a fluid injection system, a fluid valve comprising a first inlet port, a second inlet port, an outlet port, and a valve body comprising an elastomeric component, wherein the outlet port is substantially aligned with the first inlet port, wherein the valve body defines a first fluid path from the first inlet port to the outlet port, and wherein the valve body further defines a second fluid path from the second inlet port to the outlet port; allowing, by the elastomeric component, the second fluid path to be open when there is substantially no fluid flow through the valve body; and closing the second fluid path, by the elastomeric component, when a fluid pressure at the first inlet port exceeds a defined pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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providing, by a fluid injection system, a fluid valve comprising a first inlet port aligned on a first axis, a second inlet port aligned on a second axis substantially different than the first axis, an outlet port, and a valve body comprising an elastomeric component, wherein the valve body defines a first fluid path from the first inlet port to the outlet port, and wherein the valve body further defines a second fluid path from the second inlet port to the outlet port; allowing, by the elastomeric component, the second fluid path to be open when there is substantially no fluid flow through the valve body; and closing the second fluid path, by the elastomeric component, when a fluid pressure at the first inlet port exceeds a defined pressure. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A fluid valve comprising:
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a first inlet port; a second inlet port; an outlet port substantially aligned with the first inlet port; a valve body defining a first fluid path from the first inlet port to the outlet port, the valve body further defining a second fluid path from the second inlet port to the outlet port; means for allowing the second fluid path to be open when there is substantially no fluid flow through the valve body, and for closing the second fluid path when a fluid pressure at the first inlet port exceeds a defined pressure. - View Dependent Claims (19, 20)
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21. A fluid valve comprising:
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a first inlet port aligned on a first axis; a second inlet port aligned on a second axis, the second axis being substantially different than the first axis; an outlet port; a valve body defining a first fluid path from the first inlet port to the outlet port, the valve body further defining a second fluid path from the second inlet port to the outlet port; means for allowing the second fluid path to be open when there is substantially no fluid flow through the valve body, and for closing the second fluid path when a fluid pressure at the first inlet port exceeds a defined pressure. - View Dependent Claims (22, 23)
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Specification